We request 3 days on MARI to investigate the effect of Q on the previously determined partial phonon density of states of a zeolite framework with a low concentration of coordinated ammonia. We previously determined that there arise 3 low energy regions in the INS spectrum (on TOSCA), but are susceptible to varying recoil effects. One mode is thought to recoil MUCH stronger than the others, due to almost free rotation about the coordinating axis, and thus the only option for determining if this is true is to study the spectra at variable Q on MARI. This investigation will help to explore the application (and more importantly optimization) of INS to systems containing coordinated but recoiling small-molecules, which in the case of ammonia is particularly relevant to the storage of such energy-vector gases. This is a tied proposal with one on IRIS to determine how 'free' this rotation is.